Creating a table for login system

Team, Can you provide a very accurate tutorial on how to create a login system. I am using website to control a fantasy football league and teams. one sign in only for each league member/team owner. I am using phpmyadmin. Can you please help me with how the table should be. Also, help provid a script for registering and logging in. my site that i will be using this for is www.theufl.com Check it out. Thanks, Karl